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Tungsten-nickel-copper alloy and preparation method thereof

A copper alloy, tungsten-nickel technology, applied in the field of tungsten-nickel-copper alloy and its preparation, can solve problems such as toxic nitrogen oxides, human health hazards, furnace tube corrosion, etc., and achieve good electrical and thermal conductivity, strong oxidation resistance, tissue uniform effect

Inactive Publication Date: 2010-01-06
安泰天龙钨钼科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that the properties of the obtained tungsten-nickel-copper alloy are high, but a large amount of toxic nitrogen oxides are produced during the pyrolytic reduction process, which not only causes great corrosion to the furnace tube, but also seriously pollutes the environment and is harmful to human health. cause great harm

Method used

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preparation example Construction

[0020] [7] The method for preparing a tungsten-nickel-copper alloy according to any one of items [1]-[6], the method comprising the following steps:

[0021] (1) Mix oxide powder of tungsten, oxide powder of nickel and oxide powder of copper,

[0022] To obtain mixed raw material powder;

[0023] (2) reducing the mixed raw material powder obtained in step (1) to obtain tungsten-nickel-copper mixed powder;

[0024] (3) molding the tungsten-nickel-copper mixed powder obtained in the above-mentioned step (2) into a green body;

[0025] (4) Sintering the body obtained in step (3) to obtain a tungsten-nickel-copper alloy.

[0026] [8] The preparation method according to item [7], wherein the tungsten oxide is selected from WO 3 、WO 2.9 、WO 2.7 and WO 2 one or more of.

[0027] [9] The preparation method according to item [7], wherein the oxide of nickel is selected from nickelous oxide Ni 2 One or both of O and nickel oxide NiO.

[0028] [10] The preparation method accordi...

Embodiment 1

[0065] Product of the present invention

[0066] The raw material blue tungsten oxide (WO 2.9 ), nickelous oxide (Ni 2 O) and copper oxide (CuO) were placed in a mixer and mechanically mixed for 8 hours. The mixing ratio of the above raw materials is such that the weight percentage of the element tungsten (W) is 90%, the weight percentage of the element nickel (Ni) is 6%, and the weight percentage of the element copper (Cu) is 4%, with tungsten, nickel and copper The total weight of the elements. The mixed powder is reduced in a hydrogen four-tube furnace at a temperature of 800-850° C., and the reduced mixed powder is passed through a 200-mesh sieve to prepare the mixed powder of the product of the present invention.

[0067] Existing products

[0068] The raw materials tungsten powder (W), nickel powder (Ni) and copper powder (Cu) are directly placed in a mixer and mixed. The mixing ratio of the above raw materials is such that the weight percentage of the element tu...

Embodiment 2

[0075] Product of the present invention

[0076] The raw material blue tungsten oxide (WO 2.9 ), nickelous oxide (Ni 2 O) and copper oxide (CuO) were placed in a mixer and mechanically mixed for 8 hours. The mixing ratio of the above raw materials is such that the weight percentage of element tungsten (W) is 92.5%, the weight percentage of element nickel (Ni) is 5.25%, and the weight percentage of element copper (Cu) is 2.25%, with tungsten, nickel and copper The total weight of the elements. The mixed powder is reduced in a hydrogen four-tube furnace at a temperature of 800-850° C., and the reduced mixed powder is passed through a 200-mesh sieve to obtain a mixed powder.

[0077] Existing products

[0078] The raw materials tungsten powder (W), nickel powder (Ni) and copper powder (Cu) are directly placed in a mixer and mixed. The mixing ratio of the above raw materials is such that the weight percentage of element tungsten (W) is 92.5%, the weight percentage of eleme...

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Abstract

The invention relates to a tungsten-nickel-copper alloy and a preparation method thereof, in particular to a tungsten-nickel-copper alloy. The tungsten-nickel-copper alloy is characterized by having a tensile strength of above 650MPa, preferably above 750MPa, more preferably above 800MPa. The invention also relates to a method for preparing the tungsten-nickel-copper alloy, comprising the following steps: (1) mixing oxide powder of tungsten, oxide powder of nickel and oxide powder of copper to obtain powder of the mixed materials; (2) reducing the powder of the mixed materials obtained in the step (1) to obtain mixture powder of tungsten, nickel and copper; (3) moulding the mixture powder of tungsten, nickel and copper obtained in the step (2) into green bodies; and (4) sintering the green bodies obtained in the step (3) to obtain the tungsten-nickel-copper alloy.

Description

technical field [0001] The invention relates to the field of powder metallurgy. Specifically, the present invention relates to a tungsten-nickel-copper alloy and a preparation method thereof. Background technique [0002] Tungsten-nickel-copper alloy is a material with high density, high strength, low expansion coefficient and high temperature oxidation resistance. It has been mainly used in many aspects such as aviation devices, radiation shielding, and military weapon materials for a long time. For the rotor material of the gyroscope that requires non-magnetic, and the counterweight and shock absorbing material on the aircraft, it is used as armor-piercing bullets and submunitions in the military industry, as an anti-X-ray shielding material in the medical industry, and as an anti-X-ray shielding material in the civilian industry. High specific gravity alloy vibrators on mobile phones, electric heating upsetting drill blocks and electrode materials, etc. [0003] The tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C9/00C22C9/06C22C19/03C22C27/04C22C30/02
Inventor 苏国军刘俊海苏国平王峥
Owner 安泰天龙钨钼科技有限公司
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